package main

import "fmt"

func main() {
	student := make(map[string]int)
	student["john"] = 18
	student["Jerry"] = 27
	for name, age := range student {
		fmt.Printf("%s\t%d\n", name, age)
	}
	for _, age := range student {
		fmt.Printf("Ages %d\n", age)
	}
	for name := range student {
		fmt.Printf("Names %s\n", name)
	}
}
